siniali117
幼苗
共回答了24个问题采纳率:87.5% 举报
(1)C+O
2 ![](https://img.yulucn.com/upload/2/8f/28f20d9ddffd831f03dc485e2ab9ba94_thumb.jpg)
CO
2 (2)CaCO
3 ![](https://img.yulucn.com/upload/1/1b/11b91ff0ec58841d5535ab2e91443ffb_thumb.jpg)
CaO+CO
2 ↑ (3)C+2CuO
![](https://img.yulucn.com/upload/1/1b/11b91ff0ec58841d5535ab2e91443ffb_thumb.jpg)
2Cu+CO
2 ↑
(4)CaCO
3 +2HCl=2CaCO
3 +CO
2 ↑+H
2 O(其他合理答案也可)
(1)由题意可知,符合(多变一)的化合反应的化学方程式为:C+O
2 ![](https://img.yulucn.com/upload/2/8f/28f20d9ddffd831f03dc485e2ab9ba94_thumb.jpg)
CO
2 ;
(2)由题意可知,符合(一变多)的分解反应的化学方程式为:CaCO
3 ![](https://img.yulucn.com/upload/1/1b/11b91ff0ec58841d5535ab2e91443ffb_thumb.jpg)
CaO+CO
2 ↑;
(3)由题意可知,符合A+BC=B+AC的置换反应的化学方程式为:C+2CuO
![](https://img.yulucn.com/upload/1/1b/11b91ff0ec58841d5535ab2e91443ffb_thumb.jpg)
2Cu+CO
2 ↑;
(4)由题意可知,符合AB+CD=AD+CB的复分解反应的化学方程式为:CaCO
3 +2HCl=CaCl
2 +CO
2 ↑+H
2 O
1年前
1